<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>for循环语句</title>
    <p>点击下面的按钮，循环遍历对象"person"的属性</p>
    <button onclick="myFunction()">点击这里</button>
    <p id="demo"></p>
</head>
<body>

<script>
    function myFunction(){
        var x;
        var txt="";
        var person={frame:"Bill",lname:"Gate",age:"56"};
        for(x in person){
            txt=txt+person[x];
        }
        document.getElementById("demo").innerHTML=txt;
    }
</script>
</body>

</html>

